{
    "condition": [
        "Collectibale",
        "Mounted",
        "Pollution",
        "Paper fold",
        "Mint hinged",
        "Perforation damaged",
        "Picture damaged",
        "Picture and perforation are damaged",
        "Crack"
    ],
    "glue": [
        "Smooth glossy",
        "Smooth matte",
        "Ribbed glossy",
        "Ribbed matte",
        "Issued without glue",
        "Washed away",
        "Partially washed off",
        "Restored"
    ],
    "variety": [
        "Shade of color",
        "Watermark",
        "Backprint",
        "Backprint overprints",
        "Backprint element",
        "Partial backprint",
        "Perforation offset",
        "Double perforation",
        "Skipping the perforation",
        "Perforation shift",
        "Double printing",
        "Double overprint",
        "Printing on the glue side",
        "Overprint on the glue side",
        "Inverted overprint",
        "Overprint shift",
        "Perforation rebound",
        "Printing error",
        "Designer's mistake",
        "An engraved cliche",
        "Damaged/Worn-out cliche",
        "Picture size",
        "Watermark shift",
        "Drawing shift",
        "Shifted element",
        "Color shift",
        "Paper type",
        "Paper thickness",
        "Perforation type/size",
        "Printing method",
        "Inverted element",
        "Missed element",
        "Fake perforation",
        "Fake overprint",
        "Fake cancellation"
    ],
    "certificate": [],
    "expert": [],
    "buyer": [],
    "seller": []
}
